Technical description
Remaining burner anti-cycling time
What causes this fault?
This occurs because the boiler has reached its target temperature and has temporarily shut down to prevent the system from turning on and off too frequently. It is a built-in safety feature designed to reduce wear and tear on the internal components and improve fuel efficiency. The boiler will automatically resume heating once a pre-set cooling period has passed.
This is more common during the 'shoulder' months of spring and autumn when the weather is mild and the boiler needs to produce less heat to keep your home warm.
DIY fix possible
Wait for 5 to 15 minutes for the countdown to finishEnsure your room thermostat is turned up high enough to call for heatCheck that your radiator valves are open to allow heat to dissipate